Rex says
Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.
Try a scenario
Click to load — tweak from there.Inputs
Result
Discounted annual plan revenue
$996
Expected 12-month revenue on monthly plan (churn-adjusted)
$1,021
Annual plan advantage vs monthly path
-$25
Max discount that still breaks even
15.0%
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How to use this
- 1Enter monthly plan price ($).
- 2Enter monthly churn rate (monthly plan) (%).
- 3Enter annual plan discount (%).
- 4Read your discounted annual plan revenue on the right — it updates as you type.
- 5Hit Share to keep the scenario or send it to someone.
About this calculator
Offering a discount for annual prepayment trades near-term revenue for two things: upfront cash and lower churn exposure, since annual customers can't cancel mid-term the way monthly customers can. This calculator compares the effective annual revenue from a discounted annual plan against the expected revenue from monthly billing once you factor in monthly churn eating into the year, so you can see whether a given discount percentage actually leaves you better off or just feels generous. A common range is 15-20% off for annual prepay, which is usually justified if monthly churn is above roughly 1.5-2% because the churn savings from locking in a year outweigh the discount given up; if your monthly churn is very low (under 1%) a steep annual discount may cost you more revenue than it protects, since few of those monthly customers would have churned anyway. There's also a cash-flow angle this calculator doesn't fully price in: annual prepayment materially improves cash position and reduces reliance on external financing, which can be worth an extra few points of discount for cash-constrained early-stage companies even beyond the pure revenue math.
Worked example
Using the values the calculator loads with:
Inputs
- Monthly plan price: 100 $
- Monthly churn rate (monthly plan): 3 %
- Annual plan discount: 17 %
Results
- Discounted annual plan revenue: $996
- Expected 12-month revenue on monthly plan (churn-adjusted): $1,021
- Annual plan advantage vs monthly path: -$25
- Max discount that still breaks even: 15.0%
What each field means
Inputs
- Monthly plan price ($)
- The monthly plan price used in the calculation, measured in $. Starts at 100 $ so you have a working example on load.
- Monthly churn rate (monthly plan) (%)
- The monthly churn rate (monthly plan) used in the calculation, measured in %. Starts at 3 % so you have a working example on load. Accepted range: 0–50 %.
- Annual plan discount (%)
- The annual plan discount used in the calculation, measured in %. Starts at 17 % so you have a working example on load. Accepted range: 0–60 %.
Results
- Discounted annual plan revenue
- Returned as a money amount in US dollars and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Expected 12-month revenue on monthly plan (churn-adjusted)
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Annual plan advantage vs monthly path
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Max discount that still breaks even
- Returned as a percentage. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
How do I pick the right annual discount percentage?
Use the break-even discount this tool computes as a ceiling, then price a bit below it so annual plans are clearly better for you, not just neutral. If your monthly churn is 3%+, you likely have room for a 15-20% discount and still come out ahead versus the churn-adjusted monthly path.
Why does monthly churn matter so much to this decision?
Every month a monthly customer can churn is revenue you never collect, so at higher churn rates the 'expected' 12-month monthly revenue is meaningfully less than 12 times the monthly price. The annual discount is effectively you selling insurance against that churn risk back to yourself at a good exchange rate.
Does this ignore the cash-flow benefit of annual prepay?
Yes, deliberately, since this model isolates the revenue tradeoff. Getting 12 months of cash on day one is separately valuable for runway and reduces dependence on financing, so cash-constrained companies often justify going a few points past pure break-even discount to capture that benefit.
Should the discount vary by customer segment?
Often yes — segments with historically higher monthly churn (SMB, self-serve) can support steeper annual discounts because you're buying more churn protection, while low-churn enterprise segments that already sign multi-year deals don't need much of a discount incentive to prepay annually.
Accuracy and limitations
- Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
- Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
- This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.
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Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Annual vs Monthly Discount Tradeoff Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/annual-vs-monthly-discount
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/annual-vs-monthly-discount" target="_blank" rel="noopener">Annual vs Monthly Discount Tradeoff Calculator — RevenueLab</a> (2026).</p>
Source: [Annual vs Monthly Discount Tradeoff Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/annual-vs-monthly-discount) (2026).